D rylands



No Mde1- n. RYLANDS.

GOUPLING GLASS LINED PIPBS AND FITTINGS.

No. 438,023. Patnted Oct. 7, 1890.

Ziff!!! UNITED STATI-3s PATENT Oi-Fleinv DAN RYLANDS, OF BARNSLY, ENGLAND.

couPLi'N G GLASS-UNED PIPESVAND FITTiNGS SPECIFICATION forming partei Letters Patent No. 438,023, dated October` 7., 1890.

Application filed February 5, 1890. Serialllh.

'To alZZ whom it may conern:

Be 'it known that I, DAN RYLANDS, glassnianufacturer, a subject of the Queen ot Great Britain, and a resident of Barnsleyngland, have invented certain new and useful Iniproved Means of Coupling Glass-Lined Pipes and Fittings, of which the following is a'specitication, reference being had to the accompanying drawings.

ing-ring shall be suhjected'only to a directv Y to be coupled therewith I form a screw I ing the said collar or flange 5o end-ot ihe pipe,

'aged that agood joint-that which will prevent the My invention relates tothe coupling or connecting of glass-lined pipes and fittings. In pipes and ttin gs of this character-thatis to say, pipes and ittin'gs lined with glass-it is very important that there should be no twisting or turning of the, pipes or litting's themselves while being coupled, otherwise the rubbing action that occurs between the pipes and the, jointing-ring tends to abrade the ends of lthemglase linings and to buckle the said rings, Under 'these circumstances the ends of the glass linings become so worn or dainis to say, a Joint pass through the pipe from coming into contact with anything but the glass lining and.

jointing-ring-cannot be made.

According to my invention I provide coup- '1 ling glass-lined pipes and fittings inl such a manner as to avoidthe said rubbing yand abrading action and to insure that the jointcompressing force.

I form on one end of the glass-lined pipe,

by welding or otherwise, an external collar or flange, and on the end ot the pipe or fitting threaded enlargement or boss. 4Before form- I place on the pipe a coupling-nut provided at its inner end 'with au' internalshoulder orflange. -The dimensions of 'the said nut are such that ternal shoulder will freely slide on the pipe,

.but lwill not pass over the collar at the end 'gether,

liquids or gases whichit engages, with ordinary 339,270 (No model) a i jointing-ring of any suit-able kind having rstheen placed between the two ends,

and the coupling-n ut is the'n screwed home on 55 the end of the said screw-threaded pipe-or {itting. inasmuch as the collar and flange or shoulder on the pipe and niit,respectively, prevent the nntbeing drawn off the pipe the result ot the above operation is that the pipes or pipe 6o and fitting are forcibly drawn together by straight pull, the jointing-ring is tightly coinpressed, and a good joint is made, while allA abrading action ou the glass linings is avoided.

rlhesections ot piping in any service may he so constructed that each pipe has a screwed boss at one end and a plain collar at theother end, provided with a loosely-fitting couplingnut, as above described,'or the alternate lengths both ends and the intermediate lengths li'anged at both ends and providedwith two coupling-nuts. In the case of glass-lined fitl gings, whether Ts, elbows, bends, or other fittings, I prefer that screw-threaded and the coupling-nuts mounted on the pipe -sections to be connected thereto.

.According to another nioditication of any of piping may be screw-threaded at 7o the ends should be 7 5.

invention, instead ofproviding the coupling- 8o nut and the screw-threaded boss, with which continuous screwthreads I form on thesaid boss two or more inclined planes, each extending through a boss and forming portions of `rapid-pitch screw-threads, and I-form in the nut correspending internal inclined planes-or (which answer the saine purpose) projecting pieces or y fraction only of the circumference of the said lugs. A slight twist of the coupling-nut is in 9e this case sufficient to tighten the joint.

In a further modification I provide the two eompaniQn-ends ofthe pipes o1- fittings to be coupled together-with theone having a right-hand threadand the screw thi:

other a lett-hand thread, and I couple the ends of the pipes or'iittings together by a nut -Y or ring screw-threaded at the ends withright' andlett hand threads to correspond with those of the pipes or fittings.

this nut in one direction thepipes or fittings are forcibly diawnto'getherv and a joint made without any turning or twisting of the pipes themselves.

' By theiotation of reo In the accompanying drawinlgsl have shown how my said invention may be convenientiy vand advantageously carried into practice.

Fignrel is a longitudinal central section of my improved coupling for glass-lined pipes and ttings. 2 shows in longitudinal central section several parts of the said coupling detached ig 3 is a sectional elevation of a coupling constmcted according to one modicatlon of myinvention. Fig. 4 is a transverse section on the line :c Fig. 3. Fig. 5is

lar or flange A.

'23.55 the end Aportion of a glass-lined pipe .or tting, provided with a screw-threaded'enlargement or boss B. to be coupledto the pipe A.

C is a couplingnut mounted on the pipe A and having an internal flange C. Thescrewthreaded portion of the nut is sufficiently large to pass freely. over the collar A. The ange C is so constructed that it will fit easily on the bod of the pipe, but will not pass over the sai collar. The screwfthreaded boss BIgisoonstructed to lit the screw-threaded part of 'coupling-muti@ focouplefthe pipes or pipe and fitting A B, all that is required is to bringthe two companion ends together,

Y with a vitreous ring D between them, and to Ais' screw the coupling-nut C on the boss B', when the internal flange C' will bear on the collar A' and draw the parts AB forcibly together. The only piece that turns in this operation is the coup1ing-nut, so that there isno rubbing or abrading of 'the ends of the glass linings.

In the inodification shown in Figs. 3 and 4' the boss B is constructed with two or more projecting inclined planes b (each extending through a 'fraction only of the circumference of the boss) in lieu of being screw-threaded, as shown in Figs. 1 and 2. Thefcoupling-nut seribing witnesses.

is constructed with corresponding inclined planes c, or with simple internal lugs or pro- 5o ject-ions adapted to slide over the planes b. The said inclined planes b form portions of screw-threads of very rapid pitch, and the action when screwing on the coupling-nut is preci Joly that of an ordinary screwthreaded nut, with this advantage, that a slight turn of the nut is sufficient to make the joint.

- AIn the furtherniodication shown in Figs. 5 and 6 both ends of .the pipes or fittings A and B have screw-threaded bosses A B. One of the screw-threads, however, is left-handed and the other right-handed, and the couplingnut C, which in this case is a plain ring or nut without internal flan ge, is screw-threaded at the ends with right and left handthreads to correspond,as shown in Fig. 6. Therefore the rotation of th'e nut will draw both ends equally and force them together en the vitmous ring D.

In the case of fittings ot any kind, and where'the plan of coupling adopted is either of those shown in Figs. l to 4, I p refer that the coupling-nut should be mounted on the In testimony Vwhereof l have hereuntosigned. my naine in the presence of two sub- DAN RYLANDS.

Vv'itnesses: I

GEORGE HARRISON, THOMAS JOHNSON. 

